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CE Biology > B2 Life Processes > Flashcards

B2 Life Processes Flashcards

These flash cards are on Life processes, respiration, gas exchange, etc. You need to be familiar with page 2-6 of 'Ard Facts.

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1
Q

Complete the word equation for respiration so that it includes the two reactants and the two products.

Glucose + ? —> carbon dioxide + ?

A

Reactants: Glucose and Oxygen
Products: Carbon dioxide and Water
Energy is also released

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2
Q

The part of human blood which carries oxygen to cells in the body is the…

A

Red blood cells

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3
Q

The part of human blood which carries glucose to cells in the body is the…

A

Watery plasma

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4
Q

The blood pumped by the heart causes the arteries to bulge in certain places in the human body. This is best described as a…

A

Pulse

The arteries litterally stretch - you can feel it under your skin at certain points round your body.

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5
Q

How do plants get oxygen for respiration?

A

Plants get oxygen through holes in their leaves called stomata (or leaf pores).

Plants need oxygen to respire of course.

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6
Q

The bicep and tricep are examples of…

A

Antagonistic muscles.

These are pairs of muscles that work against each other, allowing part of the body to move in two directions.

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7
Q

In order to pull your hand away from a hot object, messages need to be sent from the brain to the…

A

Muscles

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8
Q

In a human, blood passes through the __________ where soluble waste is removed and stored in the __________ .

A

Kidneys
Bladder

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9
Q

Our blood contains white blood cells whose main function is to…

A

Kill microbes

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10
Q

In the alveoli (air sacs) the substance which moves into the blood capillaries is…

A

Oxygen

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11
Q

The production of urine is an example of…

A

Excretion

urine is a waste product made by the body

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12
Q

Chemicals which travel in the blood and control parts of our body are called…

A

Hormones.

For example, adrenaline or testosterone.

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13
Q

Give two reasons why smoking is bad for the lungs.

A

Coats the air sac walls with tar, slowing gas exchange.
Can cause serious lung diseases like lung cancer.
Damages the hairs which clean the lungs, leading to smoker’s cough.

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14
Q

Why do all living cells respire?

A

To get energy.

All. Living. Cells! Animals, plants, fungi, bacteria, etc.

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15
Q

Suggest two places in the human body where you could measure your pulse.

A

Wrist. Neck. Groin.

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16
Q

Exhaled air contains more __________ than normal air. When this gas is passed through __________ the solution turns from colourless to __________ .

A

Carbon dioxide
Limewater
Cloudy

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17
Q

Human cells produce…

A

Carbon dioxide

during the chemical process of respiration

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18
Q

Name two organs responsible for getting oxygen from the air to the cells of a human.

A

Wind pipe (or trachea), lungs, heart

19
Q

Write down the word equation for respiration.

A

Glucose + Oxygen —> Carbon Dioxide + Water (energy released)

20
Q

Smoking cigarettes reduces the exchange of gases in the…

A

Alveoli (air sacs)

This is due to a thin layer of tar from the smoke.

21
Q

During respiration the gas released is…

A

Carbon dioxide

22
Q

Explain why seeds on damp tissue paper in a jar containing no oxygen will not grow, where as seeds on damp tissue paper in a jar containing normal air will grow.

A

Seeds need energy so they have to respire.
To respire they need oxygen.

23
Q

Explain how the forearm could lift a weight. Use these words: bicep, tricep, relaxes, contracts.

A

The tricep relaxes and the bicep contracts.

24
Q

In your body, muscles are attached to bones by…

A

Tendons.

For example, your achilles tendon attaches your foot to your calf muscle.

25
Q

Name the organ in the human body responsible for absorbing the products of digestion.

A

Small intestine

Some absorbtion takes place in the stomach too.

26
Q

Cells __________ in order to get energy. Oxygen and __________ are used up and water vapour and __________ are released.

A

Respire
Glucose
Carbon dioxide

27
Q

In the human body what is the function of the intestines?

A

The small intestine absorbs the products of digestion.
The large intestine absorbs water.

28
Q

Name the organ which removes soluble waste from the blood, storing it as urine in the bladder.

A

Kidney

29
Q

In the human body what is the function of the liver?

A

Storing and controlling chemicals

30
Q

Explain how our body would respond if we sat on a pin. Use these words in your answer: brain, muscle, receptor, nerve.

A

The receptor sends a message through a nerve to the brain.
The brain sends a message through a nerve to muscles, causing us to stand up.

31
Q

Explain how carbon dioxide is excreted by human cells.

A

Carbon dioxide travels in red blood cells through the heart to the lungs. It passes through the air sacs into the air and is exhaled (breathed out) through the wind pipe and mouth.

32
Q

Name the organ in the human body responsible for exchanging gases.

A

Lungs

33
Q

In the human body what is the function of the heart?

A

Pumping blood

Blood leaving the heart travels through arteries. Blood returns to the heart in veins.

34
Q

In the human body what is the function of the lungs?

A

Exchanging gases (getting oxygen and excreting carbon dioxide)

35
Q

In the human body what is the function of the brain?

A

Co-ordinating the actions of the body

36
Q

In the human body what is the function of the bladder?

A

Storing urine and waste water.

37
Q

In the human body what is the function of the kidneys?

A

Removing urine and water from the body.

38
Q

In the human body what is the function of the stomach?

A

Holding and digesting food.

39
Q

Name the organ in the human body responsible for holding and digesting food.

A

Stomach.

40
Q

Suggest two things that energy can be used for in the human body.

A

Moving muscles. Growth. Repair. Keeping warm. Thinking!

41
Q

Explain why the water in an aquarium containing only animals might become more acidic.

A

Carbon dioxide levels would increase.
Carbon dioxide dissolves in water to make a weak acid.

42
Q

Do arteries carry blood away from the heart or back to the heart?

A

Away from the heart.

Veins carry blood back to the heart.

43
Q

When we touch a hot plate a message is sent to the brain through…

A

Nerves

44
Q

During respiration the gas used up is…

A

Oxygen

CE Biology (9 decks)

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